The Scarpa Alien 1.0 ski mountaineering boot is designed for competition as well as for the world's best skiers. Ultra-lightweight, stiff, and with exceptional range of motion, you will be as comfortable going uphill as downhill. With 700 g on the scale and significant range of motion, your ascents will never be the same. Fully rigid with a Carbon Grimalid® shell design, the Alien 1.0 will also ensure exceptional downhill performance. Moreover, the Boa® closure system, used in other models of the Alien range, allows for quick and effective tightening for enhanced performance. The QuickStep In inserts will finally allow you to quickly step into the skis, even in the deepest powder. A true competition beast for ski mountaineering, the Alien 1.0 will perfectly provide you with exceptional performance and the victories that come with it.